Seat Leon ST 2017 running costs in Ireland
Official UK VCA merged archive figure for the 2017 Seat Leon ST: 4.1–4.4 L/100km, 102–108 g/km CO₂. At Ireland prices (€1.92/L diesel), driving 15,000 km a year costs about €1,181 — €0.08 per kilometre.
Official figures — 2017 Seat Leon ST
| Fuel types | Diesel · Petrol |
|---|---|
| Official consumption | 4.1–4.4 L/100km |
| CO₂ (official) | 102–108 g/km |
| Configurations in source data | 2 |
| Data source | UK VCA merged archive — NEDC test cycle (optimistic vs WLTP) |
What it costs to run in Ireland
| Diesel (4.1 L/100km) | €1,181/year |
|---|---|
| NCT | €55.00/year |
| Typical annual road tax | €210/year |
| Estimated annual running cost | €1,446/year ≈ €120/month |
Assumes 15,000 km a year and the current average Ireland prices shown above (AA Ireland average, Sep 2026). Insurance is not included because it depends on your age, history and the policy — add it in the full ownership calculator. Servicing, tyres and repairs also vary by car and driver.
How it compares with other diesel cars in Ireland
The average diesel car in our Ireland dataset uses 5.6 L/100km. The 2017 Seat Leon ST uses 4.1 L/100km — about 26.8% less than that average, or roughly €432 saved a year at 15,000 km.
2017 Seat Leon ST — configurations in the official data
| Fuel | Consumption | CO₂ | Engine | Power | Source variant |
|---|---|---|---|---|---|
| Diesel | 4.1 L/100km | 108 g/km | — | — | 1 versions · NEDC · median 69 mpg (UK) |
| Petrol | 4.4 L/100km | 102 g/km | — | — | 1 versions · NEDC · median 64 mpg (UK) |
Figures are the official certified values recorded in the UK VCA merged archive, grouped across 2 configurations. Real-world consumption is typically higher than the certified figure, and NEDC-cycle figures are optimistic compared with the newer WLTP cycle.
Related
Seat Leon ST 2016 · Seat Leon ST 2018 · Seat Leon ST 2019 · Seat Leon ST 2020 · All Ireland cars · Full Ireland running-cost calculator · Ireland fuel cost calculator
These are estimates built from official certified figures and current average prices. They are not financial advice. Verify the exact figure for the car you are buying — consumption varies by trim, tyres and driving style.